As far as I know, backlinks now work quite well, but the main thing is high-quality and natural links, without spam.
Keep doing the off-page optimization (Link Building).
Note: Make your website clean and proper with good content and a good bounce rate. Make it everything right which will be more user-friendly. Have daily look on your search console and google analytics.
If I get rank on top position for some kws, then I will stop doing link building.
But if lost my position, then surely I will start again to achieve the top position.
I don't know i have not received any good results while building good link for my money wesbweb.